EP0992987A3 - Optical pickup apparatus - Google Patents

Optical pickup apparatus Download PDF

Info

Publication number
EP0992987A3
EP0992987A3 EP99119639A EP99119639A EP0992987A3 EP 0992987 A3 EP0992987 A3 EP 0992987A3 EP 99119639 A EP99119639 A EP 99119639A EP 99119639 A EP99119639 A EP 99119639A EP 0992987 A3 EP0992987 A3 EP 0992987A3
Authority
EP
European Patent Office
Prior art keywords
optical
objective lens
light beam
irradiation system
optical pickup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99119639A
Other languages
German (de)
French (fr)
Other versions
EP0992987A2 (en
EP0992987B1 (en
Inventor
Naoharu c/o Pioneer Tokorozawa Plant Yanagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corp filed Critical Pioneer Corp
Publication of EP0992987A2 publication Critical patent/EP0992987A2/en
Publication of EP0992987A3 publication Critical patent/EP0992987A3/en
Application granted granted Critical
Publication of EP0992987B1 publication Critical patent/EP0992987B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods

Landscapes

  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

An optical pickup device comprises an objective lens unit (40) having an objective lens, a support member for supporting the objective lens and an objective-lens driving mechanism for driving the objective lens in a radial direction and a focusing direction of an optical disc in such a way that a light beam is focused on an information recording surface of the optical disc; and a main unit (50) having an optical irradiation system which includes a light source for emitting a light beam and guides the light beam to the objective lens, and an optical detection system which includes a photo-sensor and guides reflected light from the information recording surface to the photo-sensor via the objective lens. The optical pickup apparatus further has a tilt-position-adjusting mechanism (41,42) for supporting the objective lens unit (40) on the main unit (50) and tilting an optical axis of the objective lens (4) with respect to an optical axis of the optical irradiation system in such a way as to minimize an undesirable astigmatism given by the optical disc and optical elements in the optical irradiation system and the optical detection system.
EP99119639A 1998-10-06 1999-10-04 Optical pickup apparatus Expired - Lifetime EP0992987B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28381498A JP3547038B2 (en) 1998-10-06 1998-10-06 Optical pickup device
JP28381498 1998-10-06

Publications (3)

Publication Number Publication Date
EP0992987A2 EP0992987A2 (en) 2000-04-12
EP0992987A3 true EP0992987A3 (en) 2000-05-17
EP0992987B1 EP0992987B1 (en) 2010-08-18

Family

ID=17670505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119639A Expired - Lifetime EP0992987B1 (en) 1998-10-06 1999-10-04 Optical pickup apparatus

Country Status (5)

Country Link
US (2) US6363038B1 (en)
EP (1) EP0992987B1 (en)
JP (1) JP3547038B2 (en)
DE (1) DE69942685D1 (en)
HK (1) HK1024774A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975576B1 (en) * 1999-07-13 2005-12-13 Kabushiki Kaisha Toshiba Optical head device and disk drive system having first and second light sources for emitting light beams of different wavelengths
KR20020069914A (en) * 2001-02-28 2002-09-05 엘지전자 주식회사 Detecting apparatus for radial tilt of photodisk and method thereof
JP2003172874A (en) * 2001-12-05 2003-06-20 Samsung Electro Mech Co Ltd Light irradiation device, optical pickup device provided with the same and method of adjusting light irradiation device
US20030147331A1 (en) * 2002-02-07 2003-08-07 G-Bond Optoelectronics, Inc. Optical pickup diffracting one of two laser beams to a single detector
US7453788B2 (en) * 2003-01-22 2008-11-18 Panasonic Corporation Optical head, optical information recording/reproducing apparatus, computer, video recording/reproducing apparatus, video reproducing apparatus, server and car navigation system
JP3611211B2 (en) * 2003-02-18 2005-01-19 パイオニア株式会社 Astigmatism measuring method, astigmatism adjusting method, and astigmatism measuring apparatus for optical pickup
US7277366B2 (en) * 2003-02-28 2007-10-02 Matsushita Electric Industrial Co., Ltd. Optical head and optical recording and reproducing apparatus
US7164108B2 (en) * 2003-04-24 2007-01-16 Coherent, Inc. Detection system for optical beam pointing and shaping
JP2005121448A (en) * 2003-10-16 2005-05-12 Pioneer Electronic Corp Apparatus for inspecting outgoing light of optical pickup
US20100257871A1 (en) * 2003-12-11 2010-10-14 Rama Venkatasubramanian Thin film thermoelectric devices for power conversion and cooling
EP1587077A1 (en) * 2004-04-15 2005-10-19 Deutsche Thomson-Brandt Gmbh Device for reproducing and/or recording optical recording media
DE112005003102T5 (en) * 2004-12-06 2007-10-25 Arima Devices Corporation, Road Town An optical pickup unit for use in a multi-disc optical disc player, and a method of correcting optical discrepancies in such an optical pick-up unit
US7342852B2 (en) * 2005-02-16 2008-03-11 Discovision Associates Method and apparatus for differing focus between at least two dimensions
US7593305B1 (en) 2005-09-09 2009-09-22 Seagate Technology Llc Removing spherical aberrations for two photon recording
WO2008096333A1 (en) * 2007-02-09 2008-08-14 Philips Intellectual Property & Standards Gmbh Noise reduction
JP4989302B2 (en) * 2007-05-10 2012-08-01 Ｈｏｙａ株式会社 Optical pickup optical system assembly method
TWI440019B (en) * 2008-03-20 2014-06-01 Sunplus Technology Co Ltd Method and apparatus for compesating astigmatism in optical storage system
US10126560B2 (en) * 2016-02-18 2018-11-13 National Engineering Research Center for Optical Instrumentation Spectrum-generation system based on multiple-diffraction optical phasometry

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351953A2 (en) * 1988-06-20 1990-01-24 Mitsubishi Denki Kabushiki Kaisha Optical head with a tilt correction servo mechanism
US5172356A (en) * 1990-06-07 1992-12-15 Ricoh Company, Ltd. Separation type optical pickup device
EP0538824A2 (en) * 1991-10-22 1993-04-28 SHARP Corporation An inclination adjusting device for an objective lens for an optical information recording and reproduction apparatus
EP0649130A1 (en) * 1993-10-15 1995-04-19 Kabushiki Kaisha Kenwood Objective lens posture adjusting mechanism for optical pickup
EP0762396A1 (en) * 1995-09-08 1997-03-12 Mitsubishi Denki Kabushiki Kaisha Optical head tracking error detection device
WO1998001853A2 (en) * 1996-07-03 1998-01-15 Philips Electronics N.V. Optical scanning device, and apparatus provided with such a device
US5956188A (en) * 1998-09-30 1999-09-21 Daewoo Electronics Co., Ltd. Tilt-adjusting structure for an axial slide type optical pickup actuator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01128238A (en) * 1987-11-13 1989-05-19 Toshiba Corp Optical means supporting device
JP2634852B2 (en) * 1988-05-07 1997-07-30 シャープ株式会社 Objective lens drive tilt adjustment mechanism
CN1044417C (en) * 1992-08-24 1999-07-28 株式会社三协精机制作所 Unit for driving of objective

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351953A2 (en) * 1988-06-20 1990-01-24 Mitsubishi Denki Kabushiki Kaisha Optical head with a tilt correction servo mechanism
US5172356A (en) * 1990-06-07 1992-12-15 Ricoh Company, Ltd. Separation type optical pickup device
EP0538824A2 (en) * 1991-10-22 1993-04-28 SHARP Corporation An inclination adjusting device for an objective lens for an optical information recording and reproduction apparatus
EP0649130A1 (en) * 1993-10-15 1995-04-19 Kabushiki Kaisha Kenwood Objective lens posture adjusting mechanism for optical pickup
EP0762396A1 (en) * 1995-09-08 1997-03-12 Mitsubishi Denki Kabushiki Kaisha Optical head tracking error detection device
WO1998001853A2 (en) * 1996-07-03 1998-01-15 Philips Electronics N.V. Optical scanning device, and apparatus provided with such a device
US5956188A (en) * 1998-09-30 1999-09-21 Daewoo Electronics Co., Ltd. Tilt-adjusting structure for an axial slide type optical pickup actuator

Also Published As

Publication number Publication date
US6363038B1 (en) 2002-03-26
DE69942685D1 (en) 2010-09-30
JP2000113497A (en) 2000-04-21
US20020071365A1 (en) 2002-06-13
HK1024774A1 (en) 2000-10-20
US6567354B2 (en) 2003-05-20
EP0992987A2 (en) 2000-04-12
EP0992987B1 (en) 2010-08-18
JP3547038B2 (en) 2004-07-28

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